Cryoglobulins
Definition
This is a blood test that measures the presence of cryoglobulins.
Cryoglobulins are abnormal proteins. At temperatures below normal body temperature (98.6 degrees F or 37 degrees C), cryogloblins no longer stay suspended in the blood. Instead, they separate out, forming complexes that can block small blood vessels, especially in the face and hands.
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Why is the Test Performed?
This test is most often performed when symptoms indicate that a person's blood may contain cryoglobulins. Cryoglobulins are associated with several disorders. (See "What Abnormal Results Mean".)
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